Fuse block



Aug. 4, 1931.

J. MESSING FUSE BLOCK 2 Sheets-Sheet 1 Filed Jan. 16, 1930 Aug. 4, 1931; .1. MESSING FUSE BLOCK Filed Jan. 16, 1930 2 Sheets-Sheet 2 INVENIOR.

A TTORNE Y.

Patented Aug. 4, 1 931 UNITED STATES ATENT OFFICE JOSEPH KESSING, OF DETROIT, MICHIGAN, 'ASSIGNOB TO BULL DOG ELECTRIC PROD- UCTS COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF WEST vmenna *tridge fuses.

FUSE BLOCK Application filed January 16, 1980. Serial Ho. 481,278.

This invention relates to fuse blocks and more particularly to blocks upon WlllCh may be mounted one or more fuses of various ty es.

t is an object of this invention to provide a block adapted to interchangeably receive a.

to rovide a block which is compact, econom-.

ica of manufacture and in which fuses may be conveniently mounted.

Further objects of the invention will readily occur to those skilled in the art upon reference tolthe following description and theaccompanying drawings, in which Fig.1 is an exploded perspective view of parts of the device. a

Fig. 2 shows the method of binding a conducting wire to the screw shell.

Fig. 3 is a plan view of a fuse block embodyin my invention.

ig. 4 is a section thereof along the line 4-4 of Fig. 3.

Fig. 5 is a section thereof along the broken line 5-5 of Fig. 3.

Fig. 6 shows, in pers ective, means to cause the ejection of a carti ge fuse. I

Fig. 7 shows, diagrammatically, ejecting means for either one or both of a pair of car- Fig. 8 is a lan view of a block for receiving a plum ity of fuses of each type and shows the mounting of the ejecting means of Fig. 9 shows, dia ammatically, another modification of the use ejecting means. Referring more particu arly to the draw I ings, Fig. 1 shows a pair of cartridge fuse receiving contact clips 11 and 12 betweenwhich is located a screw shell for receiving a plug fuse, not shown. The contact cli 11 is electrically connected to the base 13 o the shell and the other contact clip 12 is connected electrically to the center contact of the plug fuse receivlng shell which in this case may be the screw 14, by means of the link or strap 14a. Accordin 1y, it will be noted that upon the insertion-o a plug fuse or of a cartridge fuse, the line will be closed, permitting a flow of current therein.

The contact clips 11 and 12 are mounted in the fuse block 15 in appropriate recesses 16 and 17 and are longitudinally aligned and spaced from each other in the manner shown. The screw shell as above stated, is disposed between the clips and has a base portion 13 and a side wall 18, the latter having ali ed slots 19 (Fig. 2) to provide a space in w 'ich may reside the' cartrid e fuse, the ends of whlch may be dispose in clips 11 and 12. When the device. is assembled the slots 19 are lon itudinally aligned with the contact clips,

an since they are considerably larger inv width than the diameter ofthe cartridge fuses, they provide a considerable clearance between t e shell wall 18 and the cartridge fuse. The clip 11 is rovided with an extension strip 20 which iselectrically connected to the base 13 of the shell by means of the screw 21, the latter servin also to bind the conducting wire22 to the s 'ell base 13. The other contact clip 12 is electrically connected through .screw14b to an .appro riate conplug fuse is removed and current passes from conductor 22 through screw 21 and extension strip 20 to contact clip 11, thence through the fuse and to clip 12 and then out to the line ductor in a manner which is no't'fs own, since conductor not shown. Either one of these two fuses may be used, and since it is not nec.

The binding of line wire or conductor 22- to its associated contact is shown best in Fig.

2. The line wire 22 is shown entering the interior of the shell through slot 26 in the side wall 18. thereof, and it is fastened to the shell base 13 by the screw 21- previously referred to.

An important feature of my invention resides in the provision of an ejecting means for the cartridge fuse. Several forms of ejectors are shown, and are now described. One form, shown in Fi 6, is mounted in a slot 31 which may,if esired, run through the block from top to bottom thereof, forming a guideway for the cartridge fuse ejector 32 of Fig. 6. I The latter is provided with an aperture 33 through which projects the end 34 of the cartridge fuse 35. To lift the fuse 35 from its resting place in the clips 11 and 12, the handle 36 thereof is grasped and the ejector 32 is pulled out of the slot or guideway, the fuse 35 being accordingly carried along therewith. A. cover plate 37 may be and preferably is provided, said plate having a slot 38 in which is disposed the ejector 32, and having a plug fuse receiving aperture 39.

Another means for ejecting the cartridge fuse from the clips 11 and 12 is shown in Figs. 7 and 8. In this modification, the block 15 is provided with four contact clips and with two plug receiving shells, the latter construction forming a multiple fuse block. Element 41, pivoted at 42, is provided to cause the ejection of either or both of the cartridge fuses. Element 41 has cam faces 43 and 44 which are normally spaced from and are disposed below the cartridge fuses. Upon swinging of element 41 on its pivot 42 in either direction, one or the other of the fuses is caused to ride out of contact of the clips in a manner which will be obvious.

It will be observed that I .can dispense with 1 thescrew shell, by threading the plug fuse into screw threads in the block, and by providing side wall contacts.

Fig. 9 shows a simple push button ejector. When button 51 on rod 52 is pushed inwardly of the block 15, link 53 and hammer 54 will cause the ejection of cartridge fuse in an obvious manner.

It will be seen, therefore, that I have provided a construction which can accommodate a cartridge fuse or a plug fuse in each branch thereof and which is extremel compact due to the fact that the cartridge use when used occupies the space otherwise occupied by the plug fuse.

It can further be seen that I have provided means to eject or cause the ejection of a cartridge fuse from the block in a manner which will dispense with the necessity of the operators exposing his fingers to injury and danger of shock, the ejector being easily operable and conveniently mounted in or adjacent to the block. f.

Now having described the invention and the preferred form of embodiment thereof, it is to be understood that the said invention is to be limited, not to the specific details herein set forth, but only by the scope of the claims which follow.

Claims:

1. A fuse block having contact clips to receive a cartridge fuse and having a-screw shell to receive a plug fuse, the screw shell having a shell contact and a center contact. the shell contact being connected to one of the clips, and the center contact being connected to the other one of the clips, the block being adapted to receive a plug fuse or a cartridge fuse, the shell and the clips lying in substantially the same plane, and the shell being slotted so that a cartridge fuse can lie therein, transversely.

2. In a fuse block, aligned contact clips adapted to receive cartridge fuse and a screw shell between said clips adapted to receive a plug fuse, the screw shell having its cylindrical wall slotted to permit the cartridge fuse to occupy most of the space in said shell otherwise occupied by the plu fuse.

3. In a fuse block, aligned contact clips adapted to receive a cartridge fuse and a screw shell between said clips adapted to receive a plug fuse, the screw shell having its cylindrical wall slotted to permit the cartridge fuse to occupy most of the space in said shell which might otherwise be occupied b the plug fuse, and means mounted in said b ock and free of the fuse and operable'to cause the ejection of the cartridge fuse from the clips, the means being of insulation and being disposed between the shell and that clip which is of opposite polarity with respect to it.

4. In a fuse block, aligned contact clips ceive a plug fuse, the screw shell having its cylindrical wall slotted to permit the cartridge fuse to occupy most of the space in said shell which might otherwise be occupied by the plug fuse, and means mounted in said block and free of the fuse and operable to cause the ejection of the cartrid e fuse from the clips, said means being so ocated as to permit free operation of the plug fuse, the means being disposed between the shell and one of the clips.

5. A fuse block comprising abase portion and a pair of upstanding walls, contact clips on said base between said walls, and a screw shell intermediate said contacts, said shell and said contacts being in subtantial alignlnent along at least two axes, said shell having slots in its side wall in alignment with said contacts.v 1

6. A fuse block compr isin a base portion and a pair of upstanding side walls, contact clips on said base between said walls and a screw shell intermediate said contacts, said shell and said contac.s being in substantial alignment along at least two axes, said block having mounted thereon means to cause the ejection of a cartridge fuse from said contact clips, the 1 means being permanently mounted in the block, free of the fuse, between the shell and a clip.

7. In a fuse block, aligned contact clips adapted to receive a cartridge fuse and a screw shell between said clips adapted to receive a plug fuse, the screw shell having its cylindrical wall slotted to permit the cartridge fuse to occupy inost of the space in said shell occupied otherwise by the plug fuse, and means electrically connecting one of the contact cli sto said shell.

8. In a fuse lock aligned contact clips adapted'to receive a cartridge fuse and-a screw shell between said clips ada ted toreceive a plug fuse, said screw shell avingits cylindrical wall slotted to permit the cartridge fuse to occupy most of the space in said shell otherwise occupied by the plug fuse, and means electrically connecting one of the contact clips to said shell, comprising a conducting strap on said clip fastened to said shell at the base thereof. 9. In a fuse block, contact clips adapted to receive a cartridgefuse and a screw shell aligned with and intermediate said clips adapted to receive a plug fuse, said shell'comprising l1 tions extending therefrom, the space between the wings being such as to enable a cartridge fuse to lie therein transversely.

10. In a fuse block, contact clips adapted to receive a cartridge fuse and a screw shell aligned with and intermediate said clips adapted to receive a. plug fuse, said shell comprising a base portion and wing portions extending therefrom, said wing ortions being s' aced from each other to enab e a feartridge use to occupy mostof the space therebetween.

11. In a fuse block, contact clips adapted to receive a cartridge fuse, a screw shell aligned with and intermediate said clips adapted to receive a plug fuse, said shell comprising a base portion and wing portions extending therefrom, and means on said block between the shell and a clip and adapted to cause the ejection of a cartridge fuse from said clips.

12. In a fuse block, contact clips adapted to receive a cartridge fuse, av screw shell aligned with and intermediate said clips adapted to receive a plug fuse, said shell comprising a base portion and wing portions base portion and spaced wing porextending therefrom, said wing ortions being s aced from each other to enab e a cartridge use to occupy most of the space therebetween, and means on said block between the shell'and a clip and adapted to cause the ejection of a cartridge fuse from said clips.

13. In a fuse bloc contact clips adapted to receive a cartridge fuse, a screw shell aligned with and intermediate said clips adapted to receive a plug fuse, and means on saidblockbetween the shell and a clip and adapted to cause the ejection of a cartridge 1 fuse from said clips, said means bein so 10- galted as to permit free operation of tl ie plug 14. In a fuse block, means to receive a 'cartridge fuse, and means to receive a plug fuse, both of said means bein substantially coplanar and so disposed with respect to each other that only one or the other of the fuses may be used at the same time.

15. In a fuse block, contact clips adapted to receive a. cartridge fuse, a screw shell aligned with and intermediate said clips adapted to receive a plug fuse, said shell comprising a base portion and wing portions aligned with and intermediate said clips adapted to receive a plug fuse, said shell comprising a base portion and win portions extending therefrom and space from each other to enable a cartridge fuse to occupy 'most of the. space therebetween, and means on said block between the shell and a clip and adapted to cause the ejection of a cartridge. fuse from said clips, said means being so located as to permit free operation of ,the plug fuse.

17. In a fuse block, fuse clips adapted to receive between them a cartrid e fuse, and an ejector means mounted'in said block separate and independent of said cartridge fuse and movable to eject said fuse.

18. In a fuse block, fuse clips adapted to receive between them a cartridge fuse, and

an ejector means pivotally mounted in said block separate and independent of saidcartridge fuse and movable to eject said fuse.

19. In-a fuse block, alined fuse clips, a cartridge fuse connecting and held in the block by said clips, and means mounted in said block independent of said fuse and adapted to be moved to a position where it engages the fuse and forces it out of the clips. i

20. In a fuse block, alined fuse clips, a cartridge fuse connectin block b said clips, an means pivotally and held in the mounte in the block independent .of said 13;

fuse so asto be moved to a position where it engages the fuse and forces it out of the cli s. r

' 51. In a fuse block, alined fuse clips, a cartridge fuse connecting and held in the block by said clips, and means made of insulating material and mounted in said block and independent of said fuse and adapted to be moved to a position where it engages the fuse and forces it out ofthe clips.

22. In a fuse block, alined fuse clips, a cartridge fuse connecting and. held in the block by said clips, and means made of insulating material and pivotally mounted in said block independent of said fuse and so as to be moved to a position where it engages the fuse and forces it out of the clips.

23. In a fuse block, a plurality offuse clips, a plurality of cartridge fuses connecting and heldin the block by said clips and means mounted in said block independent of the fuses and movable to eject one ormore of said fuses, as desired.

24. In a fuse block, a plurality of fuse clips, a plurality of cartridge fuses connecting and held in the block by said clips and means pivotally mounted in said block independent of the fuses and movable to eject one or more of said fuses, as desired.

25. In a fuse block, a plurality of fuse clips, a plurality of cartridge fuses connecting-and held in the block by said clips, screw shells'between the cli s of each pair, and means mounted in said ldlock independent of the fuses and movable to eject one or more of said fuses, as desired, the means being between the shell and a clip.

26. In a fuse block, a plurality of fuse clips, a plurality of cartridge fuses connecting and held in the block by said clips,

screw shells between the clips of each pair,.

and means mounted in said block independent of the fuses and movable to eject one or more of said fuses, as desired, the means being between the shell and a clip, and being of insulating material.

JOSEPH MESSING. 

